GRI 28A-G Surface Mount Magnetic Reed Switch Set, Closed Loop, Standard Gap up to 1", Concealed Terminals, Gray

Deliver consistent, tamper-resistant intrusion detection across commercial and industrial doors and windows with the George Risk Industries 28A-G surface-mount magnetic contact. This magnetic reed switch set is engineered for reliable closed-loop (N.O.) monitoring, offering a standard sensing gap up to 1 inch (5/8 inch on steel) so sensors maintain detection even on wider seams or steel-mounted applications. The low-profile, steel housing and concealed terminals keep wiring out of sight for improved security and a professional finish. Installers benefit from a pre-wired 24 inch lead option and included spacers, covers and screws to reduce setup time and on-site adjustments. Built for integration with alarm panels, access control and surveillance systems, the 28A-G supports wired DC monitoring and commercial installation requirements while backed by a lifetime limited warranty for long-term peace of mind. Ideal for security integrators, facility managers and monitoring providers, the GRI 28A-G is a dependable choice for intrusion detection and access control—order now or contact us for bulk purchasing and system design assistance.

• Reliable closed-loop (N.O.) magnetic contact that delivers tamper-resistant intrusion detection and real-time monitoring for commercial sites
• Concealed terminals and low-profile steel housing provide a clean surface-mount installation and reduce exposure to tampering
• Standard sensing gap up to 1 inch (5/8 inch on steel) for dependable performance on doors, frames and windows
• Pre-wired 24 inch lead option and included spacers, covers and screws speed installation and lower labor costs
• Commercial-grade construction with a lifetime limited warranty for long-term reliability in access control and surveillance systems